7000 Series L3 Managed Switch Reference Manual for Software v2.0

Note: The ipdscp, ipprecedence, and iptos match conditions are alternative ways to specify a match criterion for the same Service Type field in the IP header, but with a slightly different user notation.

Note: To specify a match on all Precedence values, use the config diffserv class match iptos command with <tosbits> set to 0 and <tosmask> set to 1F (hex).

Default

none

Format

config diffserv class match ipprecedence <classname>

 

<0-7> [exclude]

config diffserv class match iptos

This command adds to the specified class definition a match condition based on the value of the IP TOS field in a packet, which is defined as all eight bits of the Service Type octet in the IP header. The <classname> is the name of an existing DiffServ class. The value of <tosbits> is a two-digit hexadecimal number from 00 to ff. The value of <tosmask> is a two-digit hexadecimal number from 00 to ff. The optional [exclude] parameter has the effect of negating this match condition for the class (i.e., match all IP Precedence values except for what is specified here).

The <tosmask> denotes the bit positions in <tosbits> that are used for comparison against the IP TOS field in a packet. For example, to check for an IP TOS value having bits 7 and 5 set and bit 1 clear, where bit 7 is most significant, use a <tosbits> value of a0 (hex) and a <tosmask> of a2 (hex).

Note: The ipdscp, ipprecedence, and iptos match conditions are alternative ways to specify a match criterion for the same Service Type field in the IP header, but with a slightly different user notation.

Note: In essence, this the “free form” version of the IP DSCP/Precedence/TOS match specification in that the user has complete control of specifying which bits of the IP Service Type field are checked.

Default

none

Format

config diffserv class match iptos <classname>

 

<tosbits> <tosmask> [exclude]

CLI Commands: Differentiated Services

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NETGEAR L3 manual Config diffserv class match iptos